package control.servlet;

import control.Connection;
import control.UserDAO;
import java.io.IOException;
import java.sql.SQLException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import model.Pages;
import model.User;

/**
 *
 * @author fred
 */
public class DeleteUser extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");

        HttpSession session = request.getSession();
        
        User user = null;
        Object obj = session.getAttribute("user");
        if (obj != null)
            user = (User) obj;
        
        if (user != null) {
            try {
                Connection con = new Connection();
                UserDAO userDAO = new UserDAO(con);
                
                if (userDAO.deleteUser(user)) {
                    session.setAttribute("message", "User deleted successfully");
                    session.setAttribute("user", null);
                    response.sendRedirect("index.jsp?op=" + Pages.HOME);
                }
                else {
                    session.setAttribute("message", "User could not be deleted");
                    response.sendRedirect("index.jsp?op=" + Pages.PROFILE);
                }
            } catch (ClassNotFoundException ex) {
                session.setAttribute("message", "Problem accessing the database "
                        + "with following message: " + ex.getMessage());
                response.sendRedirect("index.jsp?op=" + Pages.PROFILE);
            } catch (SQLException ex) {
                session.setAttribute("message", "Problem accessing the database "
                        + "with following message: " + ex.getMessage());
                response.sendRedirect("index.jsp?op=" + Pages.PROFILE);
            }
        }
        else
            response.sendRedirect("index.jsp?op=" + Pages.HOME);
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}

